class Solution:
    def addBinary(self, a: str, b: str) -> str:
        n = str(bin(int(a, 2)+int(b, 2))).lstrip('0b')
        if n: return n
        return "0"

if __name__ == '__main__':
    s = Solution()
    a, b = "11", "1"
    a, b = "1010", "1011"
    a, b = "0", "0"
    result = s.addBinary(a, b)
    print(result)